Example:
With the Function app as the current app, CHECK(1) checks the Function app Symbolic view variable F1. The
result is that F1(X) is drawn in the Plot view and has a column of function values in the Numeric view of the
Function app. With another app as the current app, you would have to enter Function.CHECK(1).
UNCHECK
Un-Check. Un-checks—that is, deselects—the Symbolic view variable corresponding to Digit. Used
primarily in programming to de-activate symbolic view
denitions in apps.
UNCHECK(Digit)
Example:
With the Sequence app as the current app, UNCHECK(2) unchecks the Sequence app Symbolic view variable
U2. The result is that U2(N) is no longer drawn in Plot view and has no column of values in the Numeric view
of the Sequence app. With another app as the current app, you would have to enter
Sequence.UNCHECK(2).
ISCHECK
Test for check. Tests whether a Symbolic view variable is checked. Returns 1 if the variable is checked and 0 if
it is not checked.
ISCHECK(Digit)
Example:
With the Function app as the current app, ISCHECK(3) checks to see if F3 (X) is checked in the Symbolic
view of the Function app.
App menu 415
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